20977558

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4639}}^1$

素因数の和:4684

約数の個数: 32

約数和(自身を含む): 40089600

約数和(自身を除く): 19112042

約数列:

[1, 2, 7, 14, 17, 19, 34, 38, 119, 133, 238, 266, 323, 646, 2261, 4522, 4639, 9278, 32473, 64946, 78863, 88141, 157726, 176282, 552041, 616987, 1104082, 1233974, 1498397, 2996794, 10488779, 20977558]

約数ペア:

[(1, 20977558), (2, 10488779), (7, 2996794), (14, 1498397), (17, 1233974), (19, 1104082), (34, 616987), (38, 552041), (119, 176282), (133, 157726), (238, 88141), (266, 78863), (323, 64946), (646, 32473), (2261, 9278), (4522, 4639)]